I propose the adoption of the slogan: "Ban Nothing. Question Everything".

This was the slogan of the unfortunately now-defunct UK "Living Marxism" magazine which stood apart from the current state of the left by being rather libertarian and against censorship, authoritarianism, etc.

So speaking from a left perspective, I'd argue that the left in NZ need to re-embrace libertarianism and free-thinking. I'm not too optimistic about this happening in a hurry however.